            <SECTION id="$caseName">
                <div class="border_red">
                    <p>
                        <div id="p4" class="border_red">first</div>
                    </p>
                </div>
                <update on "$TIMERS" to "unite">
                    [
                        { "id" : "gogogo", "interval" : 1000, "active" : "yes" },
                    ]
                </update>

                <observe on $TIMERS for "expired:gogogo">

                    <update on '#p4' at 'content' to 'append' with "second" />
                    <update on '#p4' at 'attr.class' with "border_blue w30 h20" silently />
                    <forget on $TIMERS for 'expired:*' />
                    <exit with true />

                </observe>
            </SECTION>


